ah cas yea i do know what a cam angle sensor is, didnt twig on the abriviation sorry haha. thats a good point actually i havent checked it. willl swap with someone and see if it fixes the problem. and boss zilla, at the time it had an atmo bov on for a while with no issues up until that day, i reverted back to stock after that thinking it was the bov but still no change! the stalling is usually when coming out of a gear with a bit of load usually has to have been on boost and let back down to idle to stall but being stock boost comes in around 2grand so thats pretty much all the time. thanks guys!